What is the solution to the equation?
x=3
x=1
x=-1
x=-3

Free 100 points to whoever says “oof the porridges” if it’s not exact, your answer will be reported, first person gets brainliest

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*